background location services

The session titled "What’s new in location authorization" at WWDC 2024 provides insights into the updates and best practices for handling location services in apps. Here are some key points related to background location services:

1. Session Lifecycle: CoreLocation now uses service sessions to manage location authorization more effectively. These sessions help maintain the app's authorization goals even when the app is in the background or terminated. This ensures that the app can resume or relaunch into the background when new information is ready for delivery, provided the app's authorization allows it.

2. Implicit and Explicit Sessions: Implicit sessions are automatically managed by CoreLocation when iterating live updates or monitoring events. However, for more control, developers can create explicit service sessions, especially when full accuracy or always authorization is needed. This is crucial for apps that require precise location data or need to operate continuously in the background.

3. Authorization Goals: Starting this year, always authorization is only effective when an explicit service session is held, and this can only be initiated when the app is in the foreground. This change emphasizes the need for apps to manage their location service sessions proactively.

For more detailed information, you can refer to the session chapter on Session lifecycle.